Investment Casting technology has a history of hundreds of years, but to this day, it is still a common choice for engineers and designers. Because it can make very complex shapes very precisely, with smooth surfaces. Whether you want lightweight and durable automotive parts or high-performance aerospace components, Investment Casting can help you achieve it.
What is Investment Casting?
You make a wax model of a part, which is almost identical to the metal part you want. You coat the model with layers of ceramic, and once it hardens, it becomes a strong shell.
You then heat the shell, letting the wax inside melt and flow out, forming a cavity inside the shell. You pour in molten metal, wait for it to cool, then break the ceramic shell, and you get a metal part exactly the same as the wax model.
With this method, you can produce metal parts with complex shapes, thin walls, and internal cavities. The finished parts are dimensionally accurate and have smooth surfaces. For this reason, aerospace components, medical instruments, racing parts, and even jewelry often choose investment casting.
Investment Casting Process Steps
Below, I will explain the entire investment casting process steps-by-steps , so you clearly understand how each step is carried out.
Wax Pattern Making
First, make a model of the part with wax. Each wax pattern is identical to the part you want. You can use traditional molds to inject wax, or use 3D printed wax patterns for rapid prototyping. When making wax models, attention to size and details is necessary, as this directly affects the precision of the final metal casting.